The pneumatic return valve of the hydrogen treatment press closes slowly
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This post was last edited by sunjl1981 on 2013-1-6 at 20:00. The day before yesterday, during heavy rainfall at our company, with the current in the electrolyzer remaining stable, the pneumatic return valve gradually closed from 15% to 1% over a period of 6 hours. Checks showed that the pressure at the outlet of the hydrogen compressor, the position of the vent valve, and the flow rate were all stable. The pneumatic valves before and after the valve in question, as well as the manual valves, functioned properly. The current drawn by the hydrogen compressor was normal, the level of the water ring in the compressor was normal, and all instruments related to temperature, pressure, and pneumatic valves were operating correctly. Sea friends, please help analyze what the problem is ? ， ， -
After being exposed to rain, the temperature of hydrogen pipelines drops significantly due to the contraction of the gas volume; there’s no need to worry.
But it seems like this kind of situation didn’t occur even when it rained before~~
Reply to 3# rze889: Check the pressure of the instrument air and whether there are any changes in the settings of the actuators. Of course, it is also related to the temperature difference in the environment, but the relationship is not significant.
Has the pressure at your compressed hydrogen distribution station increased? Also, has the main control valve on the hydrogen main pipe of your electrolyzer been activated?
We encountered a similar problem a few days ago; it was resolved on Monday. Hehe, the reason is quite simple: there were issues with the delivery capacity of the hydrogen compressor, primarily due to malfunctions in the primary and secondary gas valves. This caused the pressure of hydrogen to rise before the hydrogen scrubber, which naturally led to the shutdown of your reflux valve. Valve failures include: 1. Issues with compression in the instrument; 2. Problems with the valve body. In our case, it’s a problem with the valve body – let’s try using another hydrogen compressor
What is the relationship with process gas? Can we tell if there’s a problem with the locator by making adjustments?
What does it mean when there is a problem with gas compression? What’s wrong with the valve body? Valve core?